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Encyclopedia > Buffering

In computing, a buffer is a region of memory used to temporarily hold output or input data, comparable to buffers in telecommunication. The data can be output to or input from devices outside the computer or processes within a computer. Buffers can be implemented in either hardware or software, but the vast majority of buffers are implemented in software. Buffers are used when there is a difference between the rate at which data is received and the rate at which it can be processed, or in the case that these rates are variable, for example in a printer spooler. Originally, the word computing was synonymous with counting and calculating, and a science that deals with the original sense of computing mathematical calculations. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... In telecommunication, a buffer is a routine or storage medium used in telecommunications to compensate for a difference in rate of flow of data, or time of occurrence of events, when transferring data from one device to another. ... A Lego RCX Computer is an example of an embedded computer used to control mechanical devices. ... In computing, a process is a running instance of a program, including all variables and other states. ... In computer science, spooling is an acronym for simultaneous peripheral operations on-line (although this is thought by some to be a backronym). ...


The difference between buffers and cache: Look up cache in Wiktionary, the free dictionary. ...


Buffers are allocated by various processes to use as input queues, etc. Most of the time, buffers are some processes' output, and they are file buffers. A simplistic explanation of buffers is that they allow processes to temporarily store input in memory until the process can deal with it.


Cache is typically frequently requested disk I/O. If multiple processes are accessing the same files, much of those files will be cached to improve performance (RAM being so much faster than hard drives), it's disk cache. Look up cache in Wiktionary, the free dictionary. ...


See also


  Results from FactBites:
 
Buffer overflow - Wikipedia, the free encyclopedia (2209 words)
A buffer overflow occurs when data written to a buffer, due to insufficient bounds checking, corrupts data values in memory addresses adjacent to the allocated buffer.
A buffer overflow occurring in the heap data area is referred to as a heap overflow and is exploitable in a similar manner to that of stack-based overflows since memory on the heap is dynamically allocated by the application at run-time and typically contains program data.
The earliest known exploitation of a buffer overflow was in 1988.
Buffer - Wikipedia, the free encyclopedia (286 words)
Buffer (telecommunication), a routine or storage medium used to compensate for a difference in rate of flow of data between devices
Buffer amplifier (also sometimes simply called a buffer) is an isolating circuit used in electronics or telecommunications
Buffer is common title for character classes which primary function is to enhance other character's abilities (most often in some magic way).
  More results at FactBites »

 
 

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